Apparatus for sterilizing foods.



PATEN'IED PEB. 25, 1908.

I. HISLAIRB. APPARATUS FOR STERILIZING FOODS.

APPLICATION FILED FEB.14. 1906.

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UNlTED STATES PATENT OFFICE.

ISIDORE HISLAIRE, OF BRUSSELS, BELGIUM, ASSIGNOR TO UNIVERSAL PRODUCEPRESERVATION COMPANY LTD., OF LONDON, ENGLAND.

APPARATUS FOR STERILIZING FOODS.

Specification of Letters Patent.

Patented Feb. 25, 1908.

Application flied February 14. 1906. Serial No. 301.075.

To all whom it may concern:

Be it known that l, lsrnonn HIsLArRn, a subject of the King of Belgium,residing at Brussels, 8 Rue Floris, in the Kingdom of Belgium, haveinvented new and useful Improvements in Apparatus for Sterilizing Foods.

The present invention relates to a special applaratus for treatingrapidly and economica y foods and other articles by means of sterilizingvapors or gases which may be produced within the apparatus.

The apparatus is made in such a way as to permit of utilizing again, ifdesired, the said vapors or gases in order perform a number oftreatments with the same vapors or gases and to effect if necessary, atreatment under pressure.

The annexed drawing illustrates a construction of the sterilizingapparatus.

Figure 1 is a perspective view of the apparatus; Fig. 2 is a verticalsectional view.

A casing of wood or metal is divided into two compartments by ahorizontal partition b provided with perforations c. The bottom comartment d receives the foods or other articles to be treated the latter,which are introduced through a tight-closing door e, may be placed on ahurdle or screen, or may be suspended. A little heating means f of anyappropriate form is provided for gasifying a pastil g of anysuitableantiseptic substance. A perforated slide h, having a handle i, makes orbreaks communication between the bottom compartment and the topcompartment j. Vithin the latter is mountcpl a vertically movable piston7c with a hand e Z.

By means of Stoppers oriiaps m, communication may be established betweencompartment d and the atmosphere, another similar stopper or flap nbeing provided for compartment y.

The apparatus operates as follows: The foods or other products to besterilized are placed within the bottom compartment, the slide 71, beingclosed; then gasification of the antiseptic matter g is produced by theheating means f in such a manner as to ll the Whole of the compartmentwith sterilizing vapors which impregnate the products all the more asthe contact lasts longer. When the impregnation of the products treatedis deemed sufficient, communication is established between the upper andlower compartment b y pulling the slide h, after which the piston lc israised, the flaps m and n having been previously opened. The antisepticvapors are exhausted from the lower into the upper compartment andreplaced by fresh air. Afterwards communication between the twocompartments is intercepted and then the sterilized products arewithdrawn through door e. The antiseptic vapors thus stored up in thetop compartment may be utilized again by forcing them into the lowercompartment, refilled with other products to be treated.

The apparatus, such as described, may be employed to treat product withsterilizing vapors under a certain pressure. lt is only necessary forthat to produce the vapors within compartment d when communication withcompartment y' is established and -piston k occupies its highestposition. In

this way, the two compartments get filled with vapor and, by thenlowering the piston, after having previously shut the flaps m, saidvapor is compressed to the desired pressure. The highest obtainablepressure depends upon the relative bulk of the compartments. Theantiseptic to be vaporized or gasified may be of any suitable kind,liquid or solid. The form and arrangement of the compartments may alsovary to suit practical requirements.

I declare that what l claim is:

l. An apparatus for treating foods with sterilizing or antiseptic gasescomprising a casing, a perforated partition dividing said casing intotwo chambers, means for generating a gas in one chamber, a piston in theother chamber for drawing the gas from the generating chamber to thepiston chamber and for returning it to the generating cham-y ber, andmeans for opening and closing the perforations in said partition.

2. An apparatus for treating foods with sterilizing or antiseptic gases,consisting of 4a casing divided into two chambers,.said

chambers communicating with each other, Intestimony whereof `afiX mysignae I means for cutting off the communication7 ture in presence oftWo Witnesses.

means for generating the gas in one chamber, means for admitting -air to.said chamber ISDORE HISLAIRE. 5 and a reciprocating piston in the otherchamber for drawing the gas therefrom into the Witnesses:

second chamber and for returning it there" T. PGOUTTE,

from to the first chamber. GREGORY PHELAN.

